JPH04167649A - Cordless telephone set with slave machine position detecting function - Google Patents

Abstract

PURPOSE:To connect an incoming call to a telephone line smoothly by judging the position of a slave machine i.e., whether the slave machine is located within a speech zone or outside the speech zone even in a state other than in busy. CONSTITUTION:In a period while to speech by a master machine 1 or the slave machines 2-4 is performed, the master machine 1 transmits a code allocated to its own machine and the codes allocated to the slave machines 2-4 for outside zone detection at a constant time interval, and the slave machines 2-4, when receiving the codes allocated to its own, transmit the codes and the code allocated to the master machine 1. A control signal circuit 161 performs the operation control of a reception part 13 and a transmission part 14, and also, sends a data signal to the transmission part 14, and also, receives the data signals from the slave machines 2-4 received by the reception part 13, and judges whether the slave machines 2-4 are located within the speech zone or outside the zone. Thereby, since the master machine 1 detects the positions of the slave machines 2-4 when the incoming call arrives at the master machine 1, a call operation in accordance with the states of the slave machines 2-4 can be performed.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a cordless telephone consisting of a base unit connected to a telephone line and a slave unit connected to the base unit via wireless communication. In particular, the present invention relates to a cordless telephone capable of detecting the position of the handset, which indicates whether the handset is within or outside the calling range, when the base unit or the handset is not making a call.

(Prior Art) Some popular cordless telephones are equipped with an out-of-range detection circuit that detects when a handset is out of communication range.

(Problem to be solved by the invention) However, in the above-mentioned conventional cordless telephone,
Detection of the handset being out of range is only performed during a call; when the handset is not on a call, the handset is out of range only when the base phone calls the handset in response to an incoming call from the other party's phone but the call is not connected. It is impossible to detect that it is.

Therefore, when the handset is out of communication range, there is a problem in that the base unit monopolizes the control channel while calling the handset.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a cordless telephone with a handset location detection function that enables immediate response to incoming calls by detecting the handset's out-of-service area even when the handset is not on a call. The purpose is to capture and provide.

(Means for Solving the Problems) In order to solve the above-mentioned problems, a cordless telephone having a handset position detection function according to the present invention is provided with a cordless telephone having a handset location detection function that is assigned to a handset when a call is not being made by the handset or the handset. The handset determines whether the handset is within the calling range or outside the calling range by constantly transmitting and receiving the unique code assigned to the handset and the unique code assigned to the handset at predetermined time intervals via wireless communication. It is equipped with machine position detection means.

(Function) During the period when the base unit or handset is not making a call, the base unit transmits the code assigned to itself and the code assigned to the handset for out-of-range detection at certain time intervals. do. Upon receiving the code assigned to itself, the slave unit transmits the code and the code assigned to the base unit. By receiving this signal, the base unit determines that the slave unit is within the calling range. Further, if the tIL device does not receive a signal from the handset within a predetermined time after transmitting the code, it is determined that the handset is out of the calling range. As a result, when the base unit receives a call, the base unit detects the location of the handset (in other words, determines whether it is within the calling range or outside the calling range), so it responds accordingly to the status of the handset. It becomes possible to perform a calling operation. for example,
A call is not made to a handset that is outside the calling range, but only to a handset that is within the calling range.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the electrical configuration of a base unit 1 and a plurality of slave units 2, 3, 4, . . . which are components of the cordless telephone of the present invention.

In the figure, the base unit 1 includes a hook switch 11, an audio processing section 12, a receiving section 13, a transmitting section 14, an incoming call detecting section 15,
It is composed of a control section 16, a display section 17, an antenna 18, a handset 19, and the like. The telephone line 31 for connection with the other party's telephone is connected to the hook switch 11.
The output of the incoming call detecting unit 15 is as follows:
The signal is guided to a control signal circuit 161 that constitutes the control section 16 . Further, a handset 19 including a microphone and an earpiece is bidirectionally connected to the audio processing section 12, and the output of the receiving section 13 and the input of the transmitting section 14 are also connected. Further, the antenna 18 is connected to the input of the receiving section 13 and the output of the transmitting section 14 .

On the other hand, the control unit 16 that controls the operation of the entire base unit 1 and detects the position of the slave unit includes the control signal circuit 161,
RAM 162 and clock 16 for storing location data of the handset (that is, data indicating that it is out of communication range)
It is made up of 3rd grade. And control signal circuit 1
61 is bidirectionally connected to the RAM 162 and the clock 163, and is also bidirectionally connected to the receiving section 13 and the transmitting section 14, respectively. The control signal circuit 161 controls the operation of the receiving section 13 and the transmitting section 14, and also sends out a data signal (specifically, an ID code) to the transmitting section 14.
3 receives the data signal (specifically, the ID code) from the handset and determines whether the handset is within the calling range or outside the calling range. . Further, a signal indicating time from a clock 163 is guided to the control signal circuit 161.
1 measures the timing of transmitting the data signal based on the signal from this clock 163. Further, data indicating that the handset is out of communication range determined by the control signal circuit 161 is stored in the RAM 162 and is also sent to the display unit 17 for display.

The handset 2 includes an antenna 21, a receiving section 22, and a transmitting section -23.
, an audio processing section 24, a control signal section 25, a clock 26, a handset 27 equipped with a microphone and an earpiece, and a buzzer 28 for sending out an alarm sound.

The input of the receiving section 22 and the output of the transmitting section 23 are connected to the antenna 21 that receives the signal from the main unit 1. Further, the output of the receiving section 22 and the input of the transmitting section 230 are connected to the audio processing section 24.
The hand cent 27 is equipped with a microphone and an earpiece.
is connected.

On the other hand, a control signal section 25 that controls the overall operation of the handset 2 and detects the position of the handset is bidirectionally connected to the receiving section 22 and the transmitting section 23, and also bidirectionally connected to the clock 26. Connected to sex. The control signal unit 25 controls the operation of the receiving unit 22 and the transmitting unit 23, sends data signals to the transmitting unit 23, and receives data signals from the base unit 1 received by the receiving unit 22. It has become. Further, a signal indicating the time from the clock 26 is guided to the control signal section 25, and the control signal section 25 controls the child based on the signal from the clock 26 and the data signal from the base unit 1. It is designed to determine whether the device is within or outside the calling range. Further, a buzzer 28 is connected to the control signal section 26 to notify the user that when the handset 2 goes out of the communication range of the base unit 1, the user is out of the communication range.

Although not shown in the figure, other slave units 3, 4...(
Indicated by dashed blocks. ) also has the same configuration as slave unit 2. In addition, a unique code (ID code) is assigned to the base unit 1 and each slave unit 2, 3, 4, etc., and in this embodiment, the ID code of the base unit 1 is
,, the ID code of each handset 2, 3, 4...
Dzo, I D30. I Da.

...and...

Further, in the above configuration, the base unit 10 control signal circuit 161
The control signal units 25 of the children 82, 3, 4, . . . each include software.

Next, the handset position detection operation of the cordless telephone configured as described above will be explained with reference to the flowchart on the base side shown in FIG. 2 and the flowchart on the handset side shown in FIG. 3.

During the period when the base unit 1 and the handsets 2, 3, 4, etc. are not talking, the base unit 1 operates the clock 163 (
Step Sl), the clock 163 starts counting up (Step S2). At this time, each slave unit 2, 3.
The clock 26 of 4... is also operated (step 521).
, starts counting up the clock 26 (step 522). At this time, the control signal circuit 161 of the main unit 1 determines whether a calling signal is being received through the telephone line 1 or whether a calling signal is being sent from any of the handsets 2, 3, 4, etc. (Step S3)
. Then, when a certain period of time counted by the clock 163 has elapsed in a state where there is no incoming call signal or no calling signal from the handset, etc. (step S4).
), base unit 1 uses the ID code IDIo assigned to itself.
and the ID code ID of one handset 2. is sent to the transmitter 14 and transmitted from the antenna 1B (step 35).

This data signal (ID code) is transmitted to each handset 2, 3.4,
..., but each handset except handset 2 3゜4
... is the ID code ID. ID sent after
Since the code ID2° is not the ID code assigned to itself, no reception operation is performed.

On the other hand, the handset 2 determines that the time counted by the clock 26 is the preset time (this set time is the period after the data signal is transmitted from the base unit l to the first handset 2, and then (step 523), and if the time has not elapsed, the next received ID code is It is determined whether it matches the ID code set for itself (step 524).
). In this case, the slave unit 2 uses the ID sent from the base unit 1.
Code ID. Subsequently, since the ID code is the ID code ID2゜ set for itself, a match of the ID codes is detected (step 525), and in response, the handset 2 inputs the ID code ID assigned to itself, , and I of base unit 1
The D code ID, .

Thereafter, the handset 2 again enters the waiting state for receiving the data signal from the base device 1 (step 527), resets the count of the clock 26 (step 828), and returns to step S22. On the other hand, in step S23,
If the count time of the clock 26 has exceeded the set time, it is determined that the handset 2 was unable to receive the data signal sent from the base unit 1 because it was outside the communication range of the base unit 10, and the buzzer is activated. Sends a drive signal to the fuser 28
to notify the user that the phone is out of range (
step 529). After this, the data signal from the base unit 1 is again in the receiving state (step 527), and the count of the clock 26 is reset (step 32).
8), return to step S22.

On the other hand, when the base unit 1 receives the data signal transmitted from the slave unit 2 in step S26 (step S6), the control signal circuit 161 of the base unit 1 receives the data signal sent from the slave unit 2.
D code ID, followed by o <ID code is ID code ID set for itself. (step S7), and determines whether the ID code ID set for itself is the same (step S7). If so, a match of the ID codes is detected, and it is determined that the handset 2 is within the calling range (step S8). and,
Reset the count of the clock 163 (step S
9), return to step S2. On the other hand, if after transmitting the data signal in step S5, no data signal is received from the corresponding handset 2 in step S6, and if the ID code included in the data signal received in step S7 is set to ID code ID+.

If they do not match, the operation proceeds to step SIO, and it is determined that the handset 2 is out of the communication range. Based on this determination, the control signal circuit 161 stores data indicating that the handset 2 is out of communication range in the RAM 162 (step 5ll), and also stores the same data on the display unit 1.
7 and displays the number etc. attached to handset 2 (
Step 512), informs the user that the handset 2 is out of communication range. Thereafter, the count of the clock 163 is reset (step 513), and the process returns to step S2.

Since such operations are short-lived, the exclusive use of the control channel is short-lived.

By the way, when the handset 2 that has gone out of the calling range returns to the calling range, it will receive the data signal from the base unit 1 again in step S24, and the data signal from the base unit 1 will be received again in step S26.3.
27,328. The operation will proceed to S22. Furthermore, since the base unit 1 receives the data signal from the slave unit 2, in this case, the number of the slave unit 2 stored in the RAM 162 is deleted. At this time, the number display of the handset 20 is also erased from the display unit 17.

The above-mentioned operations are performed sequentially on each slave unit 3, 4, etc. every time a certain period of time counted by the clock 163 has elapsed.
, and sequentially determines whether each handset 3, 4, . . . is within the communication range or outside the communication range. When the process reaches the final handset, the process returns to the first handset 2 and repeats the same operation as described above. At this time,
If the handset is out of range, the data indicating this is stored in the RAM.
162.

By the way, when the above operation is repeated, for example, when a calling signal is sent through the telephone line 1, this calling signal is received by the incoming call detection section 15, and the incoming call detection signal is given to the control signal circuit 161. It will be done. In response to this incoming call detection signal, the control signal circuit 161 advances the operation to step S14 in order to shift to incoming call operation in step S3. First, from the RAM 162, the number of the handset that is determined to be out of the communication range and stored is read out. At this time, if the number of the handset read out from the RAM 162 is the number indicating handset 3, the control signal circuit 16
1 is the ID code ID of handset 3.

Skip , and enter the In code IDz of each handset in the order of handsets 2, 4, and so on. ,ID,. ... (Step 5)
15).

As a result, the data signal is not transmitted to the handset 3 that is outside the calling range, so that the line connection can be smoothly established when a call is received. Thereafter, when the call ends and the handset is on-hook, the operation ends (step 316) and returns to step S3 again. Even during this call operation, the clock 163.26 continues counting.

In addition, in the above embodiment, when the handset goes out of the calling range,
Although the handset is configured to sound a buzzer or the like to notify the user, it is also possible to configure the parent device to sound a buzzer or the like to notify the user.

(Effects of the Invention) The cordless telephone having the handset position detection function of the present invention is configured to determine the position of the handset, that is, whether the handset is within the calling range or outside the calling range, even when the handset is not in the middle of a call. For example, when a call signal is received through a telephone line, the call is not made to the handset that is outside the calling range, but only to the handset that is within the calling range. This has the effect of making it possible to connect telephone lines smoothly.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the electrical configuration of a cordless telephone with a handset position detection function according to the present invention, Fig. 2 is a flowchart for explaining the operation of the base unit, and Fig. 3 is an explanation of the operation of the handset. This is a flowchart for 1... Base unit 13... Receiving section 14... Transmitting section 16... Control section 161... Control signal circuit 162... RAM 163... Clock 2.3.4... Child Machine 22... Receiving section 23... Transmitting section 25... Control signal section 26... Clock

Claims (1)

[Scope of Claims] 1) In a cordless telephone consisting of a base unit connected to a telephone line and a slave unit connected to the base unit by wireless communication, a call is made by the base unit or the slave unit. By constantly transmitting and receiving the unique code assigned to the base unit and the unique code assigned to the slave unit at a certain time interval by wireless communication, the slave unit is within the calling range. 1. A cordless telephone having a handset position detection function, characterized in that it is provided with a handset position detection section for determining whether the handset is out of communication range.